Kaltura_Client_Exception thrown

Invalid KS "MTJkMDE2NTk4NTkzZmE3Yjg0Mzg4ZjZmMDhkZmI5OGNhNTNhZTIwNnwxMDE7OzE0OTMyMzE5MDE7MjsxNDkzMTQ1NTAxLjAxMztBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"